The figures for which other party Conservative members would countenance a post-election coalition with are as follows:

Liberal Democrats – 77 per cent. The rigours of the election campaign are clearly not souring party members on the Liberal Democrats, as this is a four-point increase in support for a second Con-Lib coalition since last month’s poll.

Democratic Unionist Party – 66 per cent. A very small two-point fall in support for the idea of a Con-DUP government, but Westminster’s second-largest right-wing party remains the second choice of partner for members.

UKIP – 52 per cent. Nigel Farage has made some overtures to the Tories in the course of the campaign, but overall the percentage of party members backing the idea of a Westminster alliance with UKIP has only risen three points since last month’s poll.

Alliance Party of Northern Ireland – 19 per cent. Already surprisingly low, support for an arrangement with the Lib Dems’ sister party has fallen another three points since last month.

Labour – 8 per cent. The Tory campaign’s ruthless focus on the threat of the SNP may explain the two-point increase in support for striking a deal with Labour. Nonetheless, a continental ‘grand coalition’ remains a remote prospect.

Green Party – 4 per cent. The party’s election campaign has, unsurprisingly, done nothing to endear it to Conservatives.

SDLP – 4 per cent. Our last survey found this ‘other Labour party’ tied with their larger cousin. The four-point gap may represent a hardening of members’ views against nationalist minor parties.

Plaid Cymru – 4 per cent. Leanne Wood’s participation in the SNP-Plaid-Green ‘anti-austerity alliance’ confirms that her Plaid is not the one that helped John Major in the 1990s.

SNP – 2 per cent. No change since the last poll, but the proportion of Tory members prepared to bargain with Sturgeon remains vanishingly small.

Respect – 1 per cent. It would be interesting to meet some of the Conservatives who would like a pact with George Galloway.

And here are figures for which other party Conservative members would countenance a confidence and supply arrangement with.

Liberal Democrats – 81 per cent. An extra four per cent of members would agree to a looser arrangement with Nick Clegg’s party. This is a four-point rise on last time, exactly mirroring the rise in support for full coalition.

Democratic Unionist Party – 76 per cent. A slight fall compared to last time, and a substantial five-point gap between them and the Lib Dems.

UKIP – 70 per cent. No change since last time, when it comes to a non-governmental pact UKIP are up there with the front runners.